# this is just the third step | |
input = [ 2, 8, 3, 5 ] # an array of unique items | |
n = len(input) | |
# (...) | |
order = [ 3, 0, 2, 1 ] # first two steps created this | |
output = [ 0 ] * n | |
for i in range(n): | |
output[order[i]] = input[i] | |
assert output == [8, 5, 3, 2] | |
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